The bi-yearly train

I was waiting for a train to arrive, not sure about whether it would come or not. Once I used to think it will always come no matter what! then after certain period of time I began to think it might not come at all. I was not sure whether I was waiting for it or not, I was not sure if I would board it or not. But may be somehow I was there at the station. And then there was that sharp light almost on time or rather before time announcing it's arrival. Quite soon I realized it was only the engine.. it came slowed down at the station ..or may be It was my imagination ..then it left. I touched it before it was gone. I don't know if it was correct thing to do. Next day at the same time quite unexpectedly it arrived again..should I say unexpectedly? ..I don't know ..but this time just not the engine but also the body the tail ..the whole train. It stopped for a while. and within seconds it was time for departure. I don't know whether I wanted to stop the train for longer. May be I did may be not. But somehow I sensed even if I pull the chain I won't be fined today. But ultimately I didn't do anything and stood there wondering about the day when I will board the return train. I have long time to think.. return train is after 6 months.